OBD Guide
ENFRDEESPT

B2266

Left Side Blend Door Circuit Failure

B2266 is an OBD-II diagnostic trouble code meaning: Left Side Blend Door Circuit Failure. Common causes: open or short circuit in the damper control circuit, faulty damper motor or servomotor. Estimated repair cost: $56–167.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • Incorrect operation of climate control
  • Different air temperatures on the left and right sides of the cabin
  • No temperature change on one side

Causes

  • Open or short circuit in the damper control circuit
  • Faulty damper motor or servomotor
  • Mechanical jamming of the damper
  • Wiring Harness Problems
  • Malfunction of the climate control control unit

How to Fix

  1. Check the integrity of the damper control circuit
  2. Check the functionality of the electric motor or servo drive
  3. Inspect the damper mechanism for jams
  4. Check wiring harness for damage
  5. If necessary, replace faulty components
  6. Reset the error and check the system operation

Related codes

B2265B2267B2268

FAQ

What does the B2266 code mean?

B2266 is an OBD-II diagnostic trouble code that indicates: Left Side Blend Door Circuit Failure

What causes a B2266 error code?

The most common causes of B2266 include: Open or short circuit in the damper control circuit; Faulty damper motor or servomotor; Mechanical jamming of the damper; Wiring Harness Problems.

How do I fix a B2266 diagnostic trouble code?

To fix B2266: Check the integrity of the damper control circuit. Check the functionality of the electric motor or servo drive. Inspect the damper mechanism for jams. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B2266?

Yes, but get it checked soon

How much does it cost to fix B2266?

The estimated repair cost for B2266 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

FRDEESPT

See also: Russian version · NationStat